Solar flares on December 28, 2001
The most powerful solar flare in 24 hours
X3.4 (very strong) flare - December 28 at 3:45 PM
Solar activity index
Value as of the end of the day on December 28, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 27, 2001 to December 28, 2001
Time zone — UTC-05 (Kapuskasing)
List of solar flares for December 28, 2001
The total number of solar flares of class C and higher — 5 flares
C class — 1 | M class — 3 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| M2.1 | 23:04 | 23:11 | 23:23 | — |
| X3.4 | 15:02 | 15:45 | 16:32 | — |
| C8.2 | 13:46 | 13:53 | 14:02 | 9751 |
| M1.3 | 07:10 | 07:30 | 07:59 | 9748 |
| M1.0 | 01:47 | 01:55 | 02:06 | 9754 |